Opened 16 years ago
Closed 15 years ago
#5405 closed defect (fixed)
MythVideo playback glitches while playing ASF (wmv9) video
Reported by: | Owned by: | Isaac Richards | |
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Priority: | minor | Milestone: | 0.22 |
Component: | MythTV - Video Playback | Version: | 0.21-fixes |
Severity: | medium | Keywords: | |
Cc: | Ticket locked: | no |
Description
MythVideo? has serious playback problems with Microsoft ASF format WMV9 video files. Specifically, I have problems playing the files produced by PBS of their "NewsHour?" program. It will randomly "skip", losing anywhere from a fraction of a second to several seconds of audio and video. This can happen several times in a short period, or only happen every few minutes.
A sample video on which mythvideo exhibits this problem (145 MB): http://dogshu.netlsd.com/080528_May_28,_2008.asf
The problem should be readily apparent within a few minutes of playing the above video with MythTV 0.21-fixes. mplayer, xine, and mythtv 0.20 have no problems playing the file.
The mythfrontend log fills up with these messages while playing the file: 2008-06-03 17:59:33.753 NVP::AddAudioData?():p1: Audio buffer overflow, audio data lost! 2008-06-03 17:59:33.988 NVP::AddAudioData?():p1: Audio buffer overflow, audio data lost!
however, I am not sure if they are related to the playback problem, since they fill up the log whether or not the video is skipping.
I am running mythtv-0.21-fixes svn revision 17429 on x86 Gentoo Linux. Please let me know if you have any questions.
Change History (6)
comment:1 Changed 15 years ago by
Status: | new → assigned |
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comment:2 Changed 15 years ago by
Component: | mythvideo → MythTV - Video Playback |
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Owner: | changed from Anduin Withers to Isaac Richards |
comment:3 Changed 15 years ago by
Milestone: | 0.21.1 → 0.22 |
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Status: | assigned → infoneeded |
Can this be reproduced with current trunk?
comment:4 Changed 15 years ago by
This problem had been fixed in release-0-21-fixes for some time. Since then, I've switched to watching the Newshour via over the air broadcast video, so I haven't tried playing these ASF files for a month or so.
Now that I try to play them again, I am not seeing the issue reported in this thread, rather the video is being played at too fast a rate, giving the audio an "alvin and the chipmunks" sound. I remember seeing this issue before, and I was able to fix this with a configuration change, but I don't recall exactly how I fixed this (different) issue.
I am running mythtv-0.21-fixes svn revision 20779 on amd64 gentoo linux currently. I'm sorry, but I do not want to try upgrading to 0.22 just yet. This particular issue has been resolved in mythtv-0.21-fixes for several months. I consider this bug to be resolved, but if you want to be sure it works under 0.22, feel free to download the video from http://dogshu.netlsd.com/080528_May_28,_2008.asf and try it under 0.22 yourself.
comment:6 Changed 15 years ago by
Resolution: | → fixed |
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Status: | infoneeded → closed |
In trunk, the symptoms seem to be different. The log contains:
repeating. The audio sync never seems to correct itsself.